diff --git a/isometric-park-fna/Engines/BuildToolEngine.cs b/isometric-park-fna/Engines/BuildToolEngine.cs
--- a/isometric-park-fna/Engines/BuildToolEngine.cs
+++ b/isometric-park-fna/Engines/BuildToolEngine.cs
@@ -27,7 +27,8 @@
            typeof(ToolComponent),
            typeof(PointComponent))]
     [Sends(typeof(ChangeContractStatusMessage),
-            typeof(PlaySoundMessage))]
+            typeof(PlaySoundMessage),
+            typeof(SingleExpenseMessage))]
     public class BuildToolEngine : Engine {
 
         private CellMap Map;
@@ -255,6 +256,8 @@
                                             new StructureComponent { Structure = Structure.Tower});
                                     Destroy(entity);
                                     SendMessage(new PlaySoundMessage { SoundName = "ConstructionShort" });
+                                    SendMessage(new SingleExpenseMessage { category = "Construction",
+                                            amount = 500M });
                                     Logging.Success("Placed Tower!");
                                 }
 
diff --git a/isometric-park-fna/Engines/SimulationBridgeEngine.cs b/isometric-park-fna/Engines/SimulationBridgeEngine.cs
--- a/isometric-park-fna/Engines/SimulationBridgeEngine.cs
+++ b/isometric-park-fna/Engines/SimulationBridgeEngine.cs
@@ -21,6 +21,7 @@
            typeof(TreeDeltaComponent),
 	   typeof(PreserveComponent))]
     [Writes(typeof(BudgetComponent))]
+    [Receives(typeof(SingleExpenseMessage))]
     public class SimulationBridgeEngine : Engine
     {
         public Simulation simulation;
@@ -55,6 +56,11 @@
         public override void Update(double dt)
         {
 
+            foreach (ref readonly var message in ReadMessages<SingleExpenseMessage>())
+            {
+                this.simulation.AddConstruction(message.amount);
+            }
+
             foreach (ref readonly var entity in ReadEntities<BudgetComponent>())
             {
                 ref readonly var budgetComponent = ref GetComponent<BudgetComponent>(entity);
diff --git a/isometric-park-fna/Simulation.cs b/isometric-park-fna/Simulation.cs
--- a/isometric-park-fna/Simulation.cs
+++ b/isometric-park-fna/Simulation.cs
@@ -29,6 +29,7 @@
         public decimal tree_clearing;
         public decimal miscellaneous;
         public decimal enforcement;
+        public decimal construction;
 
 
         public decimal final_money;
@@ -137,6 +138,7 @@
                     return new Budget { };
                 }
             }
+
         }
 
         public System.Collections.Generic.IEnumerable<Budget> allBudgets()
@@ -391,6 +393,17 @@
             }
         }
 
+        public void AddConstruction(decimal construction_amount)
+        {
+            if (this.budgets.Count >= 1) {
+                var budget = this.budgets[this.budgets.Count - 1];
+
+                budget.final_money -= construction_amount;
+                budget.construction += construction_amount;
+                this.budgets[this.budgets.Count - 1] = budget;
+            }
+        }
+
         public void updateNews() {
             this.latestNewsItems = this.sourceNewsItems.Select(s => s.Flatten(this.grammar)).ToList().Shuffle();
         }
@@ -402,6 +415,7 @@
             this.updateNews();
         }
 
+
         public void update(TimeSpan deltaTime)
         {
             if (!this.paused)
diff --git a/isometric-park-fna/UI/BudgetWindow.cs b/isometric-park-fna/UI/BudgetWindow.cs
--- a/isometric-park-fna/UI/BudgetWindow.cs
+++ b/isometric-park-fna/UI/BudgetWindow.cs
@@ -122,6 +122,7 @@
             batch.DrawString(font, line_format("Tree Planting", this.budget.tree_planting, this.previous_budget.tree_planting), new Vector2(x, bar_height * 12 + y), Color.Black);
             batch.DrawString(font, line_format("Tree Clearing", this.budget.tree_clearing, this.previous_budget.tree_clearing), new Vector2(x, bar_height * 13 + y), Color.Black);
             batch.DrawString(font, line_format("Enforcement", this.budget.enforcement, this.previous_budget.enforcement), new Vector2(x, bar_height * 14 + y), Color.Black);
+            batch.DrawString(font, line_format("Construction", this.budget.construction, this.previous_budget.construction), new Vector2(x, bar_height * 15 + y), Color.Black);
 
             Color cashflow_color = Color.Black;
             if (this.budget.cashflow < 0) {
@@ -132,8 +133,8 @@
                 final_color = Color.Red;
             }
 
-            batch.DrawString(font, line_format("Cashflow", this.budget.cashflow, this.previous_budget.cashflow), new Vector2(x, bar_height * 16 + y), cashflow_color);
-            batch.DrawString(font, line_format("Ending Funds", this.budget.final_money, this.previous_budget.final_money), new Vector2(x, bar_height * 17 + y), final_color);
+            batch.DrawString(font, line_format("Cashflow", this.budget.cashflow, this.previous_budget.cashflow), new Vector2(x, bar_height * 17 + y), cashflow_color);
+            batch.DrawString(font, line_format("Ending Funds", this.budget.final_money, this.previous_budget.final_money), new Vector2(x, bar_height * 18 + y), final_color);
 
 
             FilledRectangle.drawFilledRectangle(batch, new Rectangle(50, 50, 50, 50), new Color (0, 0,0, 0), 0.99f);